Home / 12,129.65-18,195.73-3,364.56

Finding the Fourth Proportional to 12,129.65, 18,195.73 and 3,364.56

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Solution

The fourth proportional to 12,129.65, 18,195.73 and 3,364.56 is: 5,047.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.65 : 18,195.73 = 3,364.56 : x
  2. Step 2: Convert to fraction form
    12,129.65/18,195.73 = 3,364.56/x
  3. Step 3: Cross multiply
    12,129.65x = 18,195.73 × 3,364.56
  4. Step 4: Simplify right side
    12,129.65x = 61,220,663.36
  5. Step 5: Solve for x
    x = 61,220,663.36/12,129.65
  6. Step 6: Final answer
    x = 5,047.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.